Liquid filter



July '19, 1927.l

1;'"636385 F. o. cArRoN t LIQUID FILTER f'original Filed Jan. 11 192e z sneets'jsheet 1 July-19,1927.

' F. vO. 'CATRON LIQUID` FILTER 2 Sheets-Sneek, 2

originai Filed Jan. 11` 1926 Patented July 19, 1927.`

UNITED srATEsj PATENT OFFICE.

FREDERICK o. oArEoN, or` MEMrHrs, TENNESSEE, AssrGNoR or ONE-HALE To NETTIE r. cA'TEoN. 0E MEMPHIS, TENNESSEE.

LIQUID FILTER.

Appncation mea `January 11,1925, serial No. 50,574.` Renewed January 10,1927.

The invention relates to new and Luseful improvements 1n filters and while the device is intended primarily 'for ltering gasolineV inlet and the liquid `outlet may be directly connected with each other so as to conduct 'fuel from one to the other, in case of breakto be substituted, the filter may be thrown out of action and the liquid permitted to flow. for instance from the gas tank Vof a machine to the carbureter thereof.

Vifater is used in the llower portion of `the jar as a filteringl medium,` and the liquid inlet passage includes a tube within the jar extending to a point below the water level, so that the liquid to be filtered, in order to reach the iiltered liquid outlet at the upper portion oit' the jar, must pass through the water and deposit all foreign substances Vin the latter. A further object of the invention is to provide the above named tube with at least one opening above the water level and preferably7 with a plurality of such openings, the latter serving to preventany possible back flow of 'sediment and the like from the lower portion of the jar, through the liquid inlet passage and back to the supplyy tank, said opening'or openings also serving to permit the discharge of liquid `from the tube into the container, in case the water in the lower portion of the latter should become frozen.

lV ith the foregoing in view, the invention resides in the novel subject matter hereilr after described and claimed, the description beine' supplemented by the accompanying drawing. f

YFigure 1 is an end elevation of a filter constructed in accordance with my invention.

Figs. 2 and 3 are sectional views on lines 2 2 and 3-3 of Fig. 1; l

Fig. 4 is a detailed section as indicated by line 4 4 of Fig. 3.

Fig. 5 is a sectional view partly irrelevation, illustrating the manner of connecting jar is For the' Sake of Clarity, the device -wiu be described in the position disclosed in'Figs.

1 'to 6.,V The numeral 9 designates an ordinary glass jar having a metallic cap 10, the two having the usual threaded connection.

LWithin the upper Vportion of this cap is 'a age or other injury to the jar. Thus, 1n case of such. injury and thel absencefof a new jar;

discll of' suitable material, and a gasket 12H is interposed. between said disc and the upf per end of the jar 9. This' disc 11, in the present disclosure, is formed with three downwardly projecting tubular bosses'l, 14

`plenish the water W in the lower portion of the jar 9this lmay be done by removing the plug 1G andpouring the .water through the opening. This 'plug may also be instrumental in connecting the device withV a bracket 17 to assistin supporting it, any desired yoke or the like 18 or18a being passed aroundv the jar 9` to assist in rigidly supporting the device. Yoke 18. may be padded, with a tube 18'..V Y

An inletffor the liquid to be filtered, is shown, said inlet preferably'including an el-k bow 19 threaded into the outer end of the boss 13, anda tube 2O threaded into the innery endet said boss', said tube extending to a point `below ythe level of the water. WV and havinganappropriate strainer 21. The voutlet means for the filtered liquid, in the present showing, includes an elbow 22 communieating with the outer end of thev boss 14,v and a bendable tube 23 within the container 9, this tube being coupled at one end to the inner end of the boss 14, as indicated at 24, while the other end of said tube 23 carries a strainer 25 which is preferably in the form of a chamois Sack held distended by'a coiledy spring 25, the sack being detachably heldl upon the tube 23, by a vwire wrapping or the like 26.

Normally confined within the strainer 25 is a coupling 2T of a size to be readily threaded into the boss 13. rI`hus, should the ar 9 be broken and it be impossible at that time to obtain a new one, the tube may be unthreaded from the boss 13, the strainer may be removed from the tube Q3, and by bending the latter in the required manner, to properly position the coupling 27 withr respect to the boss I3, said coupling may be threaded into said boss. This relation of parts is shown in F ig. 5 and it will be seen that free passage of liquid from the supply tube 28 to the discharge tube 29, is then permitted. This is of great advantage when the lilter is used upon an automobile, in the fuel line of the latter, the machine will not be crippled ,if the jar is broken, but may continue on its way after coupling the tube 23 to the boss 13, as shown in Fig. 5. l

In the present showing, the tube 2() is provided, above the water level, with a plurality of small openings 30. In caseof any back suction through the tube 28, coupling I9, boss 13 and upper portion of the tube 20, these openings permit fuel er other liltered liquid from the upper portion of the jar 9, to enter the tube,rthus relieving the suction and preventing it from drawing any of the accumulated sediment from the lower portion of the jar, back to the supply tank. These openings also have a further function, in that they will admit fuel or the like from the upper portion of the tube 2O into the upper part of the j ar 9, to find its way through the strainer 25 and into the outlet tube 28, even should the water IV be frozen solidly. The openings 30 preferably decline toward the center of the tube 20 as I have found that under ordinary favorable conditions, this inclination tends to prevent direct Vdischarge et liquid from the tube 20 into the upper portion ofthe jar 9, the liquid then passing on through the tube 2O and the strainer 2l into the water TW, through which 'it rises to the upper portion of the jar, so that it is ef- `tectively liltered. Further filtering and straining is of course effected by the strainer 25.

Figs. 7 and 8 disclose that the device may be used in an inverted position or in a horizontal position. In either case, the strainer 25 is above the water level and the strainer Moreover, the openabove the water level and it will be understood that the tubes may necessarilyv be bent in one manner or another to properly position them.

For drawing out any accumulated mattei' from the ar, without the necesity of entirely detaching the latter, a siphon may be employed, having one leg 3l within the jar S) and its other leg at the exterior thcreot, said leg' 32 being provided with an appropriate cock which is normally closed.

I claim:

l. In a lilterhaving a fragile container, a liquid inlet passage, a liquid outlet passage, one of said passages including a tubevin the container, and means normally in said container for coupling said tube of the one passage to the othei1 passage in case of injury to the container.

2. In a filter having a fragile container; a liquid inlet passage, a liquid outlet passage including a tube in thecontainer, a removable hollow strainer on the end of said tube, and a coupli g normally confined in said strainer and adapted, when. the latter is removed, for connection with said liquid inlet passage, whereby liquid may be conducted from one passage to the other in case oli' injury to the container.

3. A structure as specified in claim l; said tube being of readily bendablc nature to permit easy movement thereof into proper relation with said other passage when it is to be coupled thereto.

et. A filter comprising a container whose lower portion contains a tiltering liquid, a liquidv inlet passage including a tube in the container extending to a point below the level of the filtering` liquid, and a filtered liquid outlet passage leading' from the container above the level oi" the liltering liquid, said tube having an opening into the coutainer above the level o'lI the filtering liquid, for the purposes set forth. I

A structure as specified in claim et; said opening declining toward the center of the tube for the purpose set forth.

In testimony whereof I have hereunto affixed my signature.

FREDERICK O. CATRON, 

